Oil burner



Aug. 4, 1925. 1,548313 E. J. HEMMER OIL BURNER Filed- July 1. 1924 j .23 J7 #6707767; I anon fox Patented Aug. 4, 1925.

PATENT @FFEQE.

EDWARD J. HEMMER, 0F ENID, OKLAHOMA.

OIL BURNER.

Application filed July 1,

To all whom it may concern:

Be it known that I, EDWARD J. Hnirainn, a citizen of the United States, residing at Enid, in the county of Garfield and State of Oklahoma, have invented certain new and useful Improvements in an ()il Burner, of which the following is a specification.

This invention relates to an improved gravity feed burner which is capable of effectively burning kerosene and equivalent inexpensive fuel.

It is my object to provide a burner for utilizing this grade of fuel which is per mitted by the employment of a structure which includes means for introducing highly heated air to the burner head to mix with the oil or the like so as to provide a readily ignitable and long and steady burning combustible fuel mixture.

More specifically speaking, I provide a structure which compels the air to first come into contact with the highly heated burner head, after which it is conveyed through overlying conduits to the center of the burner head to mix with the incoming oil.

Other features and advantages of the invention will become apparent from the following description and drawing.

In the accompanying drawing forming a part of this application and in which like numerals are employed to designate like parts throughout the same:

Figure 1 is a top plan View, partly in sec- "tion, of a burner constructed in accordance with the present invention.

Figure 2 is a central vertical section on the line 2-2 of Figure 1.

Figure 3 is a top plan view of a slightly modified embodiment of the invention.

Referring to the drawings in detail, the reference character 1 designates generally the so called burner head which in the present instance is substantially cup-shaped, the same being provided at its center with an upwardly extending projection 2 which is provided at its top with an annular oil re ceiving groove 3. It is through this central projecting portion that the oil feed pipe at extends, the same having its upper end projecting slightly beyond the groove 3. Surrounding the burner head in spaced relation is a substantially annular hollow casing 5, the top flange 6 of which terminates 1924. Serial No. 723,563.

substantially flush with the inner wall of the burner head. The lower flange 7 extends a distance inward of the top flange and terminates in close spaced relation from the exterior of the burner head to provide a restricted annular air intake 8. At circumferentially spaced points, the top flange 6 is provided with air discharge ports 9 of substantially triangular formation. Connected at their outer ends to the air discharge ports are a plurality of radiating hollow branch passages or conduits 10. By; preference, these branches are substantially V-shaped in cross section and join each other to provide a central hot air discharge 11 directly over the discharge end of the fuel feed pipe 4.

In practice, the air enters the hollow casing through the annular air intake 8, following the direction indicated by the arrows. It is to be noted that the incoming air is thus compelled to contact with the heated wall of the burner head at which time it becomes initiallv heated. This initially heated air passes out through the discharge port 9 and into the several conduits 10, these overlying the flame and being highly heated thereby, it is evident that the air passing therethrough will be in turn heated to an excessive degree. The highly heated air passing out through the discharge 11 will mix with the fuel to render the latter susceptible to rapid ignition. However, the fuel vapor thus formed will burn rather slowly. It has been found that the V-shaped branches are very successful when disposed in the manner shown inasmuch as they afford considerable surface for the flame to impinge directly on and as the walls thereof absorb the heat, the latter will be radiated for very effectively heating the air passing through the branches.

Figure 3 of the drawing merely shows, as before stated, a slightly different embodiment of the invention. Referring to this figure it will be seen that the only distinction resides in the fact that I show six branches instead of four. As the structure is identical with that already described, the same reference characters are used throughout the drawing.

Burner has been actually constructed in accordance with the invention and has been used to give the device a very severe test, the result being that it has indeed been found successful.

Having thus described the invention, what I claim is V A fuel burner comprising a substantially cup-shaped circular burner head, a fuel feed pipe connected with the central'portion of said head for conveying fuel thereto, an annular hollow casing having upper and lower inturned flanges, the lower inturned flange being spaced from the burn er head to provide a constricted annular intake for air, the top flange of the casing being provided With circumferentially spaced air discharge ports, and a plurality of substantially V-shaped conduits connected together at their inner ends at a point over the fuel feed pipe for discharging air into the burner head, said conduits being connected at their outer ends to said air discharge ports.

ture.

EDWARD J. HEMMER.

I11 testimon whereof I aflix 1n 1 si na- 

